using directed Chemical Vapor Deposition of plastics or layers of gold or silvers. Hohlraum targets are pellets of DT fusion fuel that are surrounded by tubes of gold foil. The laser strikes the foil and creates x-rays that compresses the targets; simulates nuclear weapons. Silk Mounted Targets have been mounted on strands of spider silk; this material is the strongest material per cross-section known and maintains good characteristics down to cryogenic temperatures. Cryogenic targets are those that must be kept below ~34 Kelvin to condense the hydrogen gas into liquid or ~14 kelvin to condense to a solid. Foam Wetted targets are made using a variety of carbon-hydrogen foams and filled with liquid DT material cooled to below ~34 Kelvin. Ice targets are made using a variety of carbon-hydrogen foams and filled with liquid DT material cooled to below ~14 Kelvin. Cryogenic Targets There are several ways to get tritium and deuterium into an already-made capsule. High pressure fills work by putting the shells in a chamber with 1 to 100 Atm of gas pressure and having the gas diffuse into the shell. Cryogenic foam shells work can work by wicking in the liquid DT fluid into the foam. This involves getting the delicate shell down in temperature and pressure without damaging it. This is a stepwise process that can take hours to days in time and requires multiple containment chambers and various kinds of pumps. At cryogenic temperatures, the DT gas forms into a fluid which can be wicked into the foam shell. Once filled, operators slowly lower the temperature further to form the ice crystal. Ice can start formation around the equator of the target and then grow into a complete crystal. The ice is embedded with the foam shell structure. Engineers have had problems with ice cracking during this formation process – all of which impacts the performance of the shot. Monitoring of all of this is done using shadow grams, 360 X-ray diagnostics, visual inspection, and other tools; information is all run through software that gets a complete picture of the target during filling. Moving Cryogenic Targets Keeping an ICF frozen at cryogenic temperatures while delivering it to the chamber for a shot is challenging. For example, at the Laboratory for Laser Energetics the frozen target is held inside a custom-built, mobile cryogenic cart that can be moved into position under the target chamber. The cart